單項(xiàng)選擇題Attention is called to the fact in many cases pipelines are not buried and charted depth may be decreased()up to teo meters.

A.with
B.by
C.on
D.in


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1.單項(xiàng)選擇題Backstaysare()。

A.running rigging leading aft from the masts
B.running rigging leading forward from the masts
C.standing rigging leading aft from the masts
D.standing rigging from the trees to the mast head

2.單項(xiàng)選擇題Be carefully when you()the derrick.

A.operate
B.operating
C.operated
D.operates

3.單項(xiàng)選擇題Before using a fixed C02 system to fight an engine room fire,you must().

A.secure the engine room ventilation
B.secure the machinery in the engine room
C.evacuate all engine room personnel
D.ALL of the above

4.單項(xiàng)選擇題By regulation, cargo tanks must be inert before and during what operation?().

A.Stripping
B.Loading
C.Cleaning
D.Crude oil washing

5.單項(xiàng)選擇題By the stowage factor,when given a certain volume of space, we know().

A.the space of the ship
B.the space of one ship
C.what kind of cargo can be stowed
D.how much cargo can be stowed